How to customize auto-generated file upload name field in custom connector action?

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Posted on by janne_

Hi,

I'm creating a custom connector with the ability to upload a file.

This is the swagger definition of the action:

"/action/files": {
 "post": {
 "operationId": "UploadFile",
 "summary": "Upload file",
 "consumes": [
 "multipart/form-data"
 ],
 "parameters": [
 {
 "$ref": "#/parameters/regionParam"
 },
 {
 "$ref": "#/parameters/projectIdParam"
 },
 {
 "name": "path",
 "x-ms-summary": "Folder path",
 "description": "Folder path to the file",
 "in": "query",
 "type": "string",
 "default": "/"
 },
 {
 "name": "content",
 "x-ms-summary": "File content",
 "description": "File content to upload",
 "in": "formData",
 "type": "file",
 "required": true
 }
 ],
 "responses": {
 "200": {
 "description": "OK",
 "schema": {
 "type": "object",
 "properties": {
 "fileId": {
 "type": "string",
 "x-ms-summary": "File id"
 },
 "name": {
 "type": "string",
 "x-ms-summary": "File name"
 }
 }
 }
 }
 }
 }
}

This is a screenshot of what the above definition produces:

How do I customize the description/x-ms-summary text of the automatically generated "File content (file name)" / "File content to upload (file name)" field? I would like to change it to something more user-friendly like "File name" / "File name with extension".

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Using connectors

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murshed Microsoft Employee on at

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Hi @janne_
Here is an example of how to do it: https://powerusers.microsoft.com/t5/Building-Flows/Custom-connector-with-action-that-uses-formdata-to-send-file/td-p/122954
Basically you create three fields with formdata. Please let me know if this works.

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janne_ 10 on at

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That example doesn't seem to be valid. It uses { "type": "string", "format": "file" } which is not a swagger data type. But it made me take a second look at the documentation, and I noticed that an another way to upload arbitrary binary data is to use { "type": "string", "format": "binary" }, so this seems to work after also modifying the backend to read the file directly from the raw request body:
{ "name": "filename", "x-ms-summary": "File name", "description": "File name with extension", "in": "query", "type": "string", "required": true }, { "name": "content", "x-ms-summary": "File content", "description": "File content to upload", "in": "body", "schema": { "type": "string", "format": "binary" }, "required": true }